Ignazio allegketti



(No Model.)

'1. ALLEGRETTI.

REFRIGERATOR. I

No. 370,591. Patented Sept. 27, 1887.

'terial; and my invention consists in the pe-' ber, or apartment, havingits walls double and the skeleton frame.

I UNITED STATES PATENT OFFICE.

IGNAZIO ALLEGRETTI, OF WEST BERKELEY, CALIFORNIA.

REFRIGERATOR.

SPECIFICATION forming part of Letters Patent No. 370,591, datedSeptember 27, 1.887.

Application filed September 18, 1F86. Serial No. 213,961. (No model.)

To all whom it may concern.-

Be it known that l, IGNAZIO ALLEGRETTI, of West Berkeley, Alamedacounty, State of California, have invented an Improvement inRefrigerators; and I hereby declare the fol lowing to be a full, clear,and exact description of the same.

My invention relates to the class of refrigerators for the preservationof perishable maculiar construction and combination of de-- vices} whichI shall hereinafter fully describe and claim.

Referring to the accompanying drawings for a more complete explanationof my invention, Figure 1 is a longitudinal vertical section of myrefrigerator. Fig. 2 is a vertical crosssection of the same, taken online y y, Fig. 1.

A is the outer shell or casing, whichmay represent any suitable box,vessel, car, chamfilled in with non-conducting material of any suitablecharacter. Within the shell or casing is fitted a skeleton frame, B,made of suitable bars, strips, or scantling, and having a height lessthan that of the shell or casing, so that an ice-space, I), is formedbetween the top of said frame and the top of the said shell or casing.The sides, the ends, and the bottom of the skeleton frame are separatedfrom the corresponding parts of the outer shell or casing by means ofindependent separated blocks 0. These are nailed or otherwise firmlysecured to the walls of the outer shell or casing, and the scantlings orbars of the skeleton frame are nailed or otherwise firmly secured to theblocks, so that said frame is permanently secured in place. Theinterventionof these blocks provides an air space, I), all around thesides, the ends, and the bottom of The skeleton frame is lined withplates, D, of zinc, galvanized iron, or other material which has goodconducting properties. These plates are secured, in suitable manner tothe inner surface of the sides, the ends, and the bottom of the skeletonframe and to the upper surface of the top of said frame, and they thusform andinclose a chamber, d, in which the material to be refrigeratedis contained. Access is had to the chamber 12 from the outside by meansof tight passages a character that they have no communication whateverwith the air-space or with the icespace through which they pass. Theformer result may be obtained by means of bars, forming, as it were,thejambs of the doors and crossing the air-space, and the latter result maybe accomplished by a close frame-work such as is shown. Access may behad to the ice-space b by means of aperturesb controlled by doors I),and located in any suitable portion of the outer shell or casing. Theyare here shown in the end of said shell or casing, and are two innumber, one on each side. The object of having two in this case is tocommunicate with the separate divisions into which Idivide the icespaceby means of the hanging flaps or strips E, which are hinged to the undersurface of the top of the outer shell or casing, their lower edgescoming down closely to the zinc lining D of the skeleton frame.

F are movable ice-chambers, the details of construction of which I neednot here enter upon, for the reason that I have secured them in aseparate application heretofore made. It will therefore be sufficientfor the purposes of my present application and the claim which I intendto make to describe them simply as consisting of skeleton frames linedwith plates of conducting material. These ice-chambers are here shown ina vertical position within the chamber d. They may be arranged in anyother suitable position, their object being to efieet refrigerationthroughout the mass of material in the apartment d. The upper ends ofthese movable chambers are open and communicate directly with theicespace b above. Access may be had to them when arranged vertically bymeans of apertures f made in the top of the outer shell or casing, whichapertures are controlled by doors f. When they are arranged in otherthan a vertical position, their open ends are brought into closerelation with the outer shell or casing, and through apertures madetherein ice may be introduced. They may be secured inany suitablemanner'adapting them to be readily removed and replaced in the same orother positions.

The operation of my refrigerator is as follows: Material to berefrigerated is introduced to the apartment d through the passages d,which are then closed by their doors. Ice is introduced to the ice-spaceb above the skeleton frame through the door-controlled apertures b, andice may be introduced into the movable ice-chambers F through theirdooreontrolled apertures f. The object of the hanging strips E, whichdivide theice space, is simply to regulate the distribution of the ice,and at thesametime, byreason of theirswinging, to not interfere with theice in transferring it from one side to another.

The spaeeformed by the intervention ofthe blocks 0 does notcontain-anyice,but is merely an air-space. These blocks provide for avery simple, practical, and effective way in which to form thisair-space, and by means of which the skeleton frame may be permanentlyse- 25 cured in its place.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

In an improved refrigerator comprising an 0 outer shell or casing, aninner skeleton frame, and an ice-space, the combination of said shelland frame with door-controlled apertures b leading to the ice-space, andthe flaps or strips E, hinged to the under surface of the top of 35 theshell and having their lggwer edges contiguous to the top of theskeleton frame, substantially as specified.

In witness whereof I have hereunto set my hand.

IGNAZIO ALLEGREIII. Witnesses:

S. H. N OURSE, H. 0. LEE.

